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Convention Paper

Comparison of Receiver-Based Concealment and Multiple Description Coding in an 802.11-Based Wireless Multicast Audio Distribution Network

Authors: Purat, Marcus; Ritter, Tom

AES Convention 127 · Paper 7943 · October 2009

Abstract

This paper presents aspects of a study of different methods to mitigate the impact of packet loss in a wireless distribution network on the subjective quality of compressed high fidelity audio. The system was simulated in Matlab based on parameters of an 802.11a WLAN in multicast-mode and the Vorbis codec. To aid the selection of the most appropriate packet loss concealment strategy not only the additional bandwidth, the processing requirements or the latency need to be considered. One important differentiating factor is the perceived subjective audio quality. Therefore an accurate estimate of the subsequent audio quality is required. Several simulation based methods using psychoacoustic models of the human hearing system to quantify the subjective audio quality are compared.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7943
Publication date
October 6, 2009
Session subject
Audio Networks
Affiliation
Beuth Hochschule für Technik Berlin, Berlin, Germany (See document for exact affiliation information.)
Type
Convention Paper